Theanine (L-Theanine) is a unique free amino acid in tea. Theanine is a glutamic acid gamma ethyl ester, which has a sweet taste. Theanine content varies with the variety and part of tea. The weight of Theanine 1%-2% of in dry tea. Theanine is chemically similar to the active brain substance, glutamine and glutamic acid, and is the major component in tea. The theanine content account for 1~2% in new tea, its content will reduce with the fermentation. Theanine is a white needle shape, soluble in water. It has sweet taste and fresh taste, and is a component of tea taste.
1. Effect on activity of central nervous system transmitters
When measuring the influence of theanine on monoamine metabolism (monoamine) in various parts of the brain, it was found that theanine can significantly promote the release of dopamine (dopamine) in the brain and increase the physiological activity of dopamine in the brain. Dopamine is a central neurotransmitter that activates brain neurons, and its physiological activity is closely related to the emotional state of the human being. Although the mechanism of Theanine in the central nervous system of the brain is not very clear. However, the effect of theanine on the mind and emotion is undoubtedly part of the physiological activity of dopamine, a neurotransmitter in the central nervous system. Of course, the anti fatigue effect of tea is also considered to some extent derived from this effect.
2. Hypotensive effect
Theanine showed a reduced effect of hypertension and, to some extent, can be considered as a stabilizing effect. This stabilizing effect will undoubtedly contribute to the recovery of physical and mental fatigue.
3. Modulate the changes in nerve mass in the brain
Theanine affects the metabolism and release of dopamine and other neural transmitter substances in the brain, and may also be regulated or prevented by the transmission of substance controlled brain diseases by these nerves.
4. Improve your learning ability and memory
Caffeine is a well-known stimulant, but people feel relaxed, calm and relaxed when they are drinking tea. It has been proved that this is mainly the function of theanine.
6. Improves menstrual syndrome
Most women have menstrual syndrome. Menstrual syndrome is a symptom of mental and physical discomfort that occurs in women 25 to 45 years before the first 3-10 days of menstruation. Mainly in the spirit of easy irritability, anger, depression, anxiety, inability to concentrate, mainly in the body is not easy to fatigue, Renmian, headache, chest pain, abdominal pain, backache, cold feet. The calming effect of theanine has led to improvements in the menstrual syndrome, and clinical trials in women have demonstrated its effectiveness.
7. Protect nerve cells
Theanine can inhibit the death of neuron caused by transient cerebral ischemia and protect nerve cells. The death of nerve cells is closely related to glutamate, an excitatory nerve transmitter. In the case of excessive glutamate, cell death occurs, which is usually the cause of Alzheimer's disease. Theanine is similar in structure to glutamate and competes with binding sites to inhibit neuronal cell death. Theanine may be used in the treatment of cerebral disorders caused by glutamate, such as cerebral embolism, cerebral hemorrhage, and the treatment of brain diseases such as virtual blood and Alzheimer's disease, which occur during brain surgery or brain injury.
8. Enhancing the efficacy of anticancer drugs
The incidence and mortality of cancer remain high, and drugs developed for cancer treatment often have strong side effects. In addition to the use of anticancer drugs, many drugs that inhibit their side effects must also be used in the treatment of cancer. Theanine has no antitumor activity in itself, but it can improve the activity of various antitumor agents. Theanine and antineoplastic drugs are combined with theanine to prevent the flow of antitumor drugs from tumor cells and enhance antitumor effects of antitumor drugs. Theanine can also reduce the side effects of antitumor drugs, such as regulating the level of lipid peroxidation, reducing the anti tumor drugs caused by white blood cells and bone marrow cells and other side effects. Theanine can also inhibit the invasion of cancer cells, and infiltration of cancer cells is a necessary pathway for cancer cell proliferation. Inhibition of its invasion can prevent the spread of cancer. As is known to all, tea has the effect of reducing weight. Long term drinking tea makes people thin and removes human fat. In addition, theanine was found to have the effects of liver protection and antioxidation. The safety of theanine was also demonstrated.